CN105733567B - It is a kind of for LED white emitting fluorescent powder and preparation method thereof - Google Patents
It is a kind of for LED white emitting fluorescent powder and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of white emitting fluorescent powder for LED, chemical general formula Ca0.75‑xEuxSr0.2Mg1.05‑yMny(Si2O6), wherein 0.02≤x≤0.04,0.01≤y≤0.03；Its preparation method：（a）Oxide or carbonate containing Ca, Sr, Mg, Si, Eu, Mn element are weighed by the mol ratio of each element in the chemical general formula, is mixed, grinding obtains mixture；（b）The mixture is placed in reducing atmosphere, high-temperature roasting obtains sintered body；（c）Sintered body is cooled to after room temperature and ground, the white emitting fluorescent powder for LED is obtained.White emitting fluorescent powder excitation wavelength range prepared by the present invention is wide, and luminous intensity is high, and stability is high, can effectively it be excited by specific UV wavelength, bright white light is sent, and matrix of the present invention is non-rare earth ion doped single pure silicate, and production cost is greatly lowered compared with prior art, preparation technology is simple, easily operated control, safe, preparation time is short, production efficiency is high, suitable for industrialization large-scale production and popularization and application.
Description
Technical field
The present invention relates to luminescent material and preparation method thereof, specifically a kind of white emitting fluorescent powder for LED and its
Preparation method.
Background technology
In lighting field, white light LEDs are considered as traditional incandescent lamp, fluorescent lamp and the high-intensity gas discharge lamp of substitution
Forth generation lighting source.Based on light emitting diode（Light-EmittingDiode, LED）White light LED part have efficiently,
Energy-saving and environmental protection, small volume, long lifespan, high reliability, are widely used in various illuminations and display field.
At present, realizing the approach of white light LEDs mainly has two kinds：（1）Blue-light LED chip excites yellow fluorescent powder, blue light and
Gold-tinted is mixed into white light；（2）Purple light（Or it is ultraviolet）LED chip excites three kinds of fluorescent material of red, green, blue, and red, green, blue is mixed into
White light.Technical staff in formation mechenism based on the first white light LEDs, industry has actively developed grinding for yellow fluorescent powder matrix
Study carefully, such as day is sub- chemical（Nichia）Patent US5998925 have developed chemical general formula for (Y1-x,Smx)3(Al1-y,Gay)5O12:Ce3+；
And for example, Ou Silang（Osram）Patent US6669866 reports chemical general formula for (Tb1-x-y,Rex,Cey)3(Al,Ga)5O12（Write a Chinese character in simplified form
TAG:Ce3+）Yellow fluorescent powder, etc..In these fluorescent material, everybody is more known and applies more ripe yellow fluorescence
Powder is mainly YAG:Ce3+, it can effectively be excited by 440-480nm blue-light LED chip, and white light is complementarily shaped to blue light；And
And YAG:Ce3+The emission spectrum of fluorescent material is quite broad, relatively large to the fault tolerance of wavelength, makes encapsulation person white in manufacture
Efficiency can be improved during light LED and cost is reduced, the white light LEDs of high color temperature are particularly suited for, and this is also YAG:Ce3+Fluorescent material is only
So by the widely used main cause of industry.But, YAG:Ce3+There is also the fluorescent material of certain defect, such as reaction synthesis
Particle size is whard to control, as activator rare earth material price it is higher, warm colour etc. can not be allotted.Therefore, it is non-in industry
Often more outstanding, the with low cost yellow fluorescent powder of continual exploitation performance is necessary as matrix, and then processability is excellent
White emitting fluorescent powder, this has very important significance to the development and promoting the use of for promoting white light LEDs in industry.
The content of the invention
It is an object of the invention to provide a kind of for LED white emitting fluorescent powder and preparation method thereof, provided more for white light LEDs
The selection of many materials, solving the preparation of the existing white emitting fluorescent powder more rare earth ion that needs to adulterate causes the problem of cost is higher.
The purpose of the present invention is achieved through the following technical solutions：A kind of white emitting fluorescent powder for LED, the fluorescent material
Chemical general formula be Ca0.75-xEuxSr0.2Mg1.05-yMny(Si2O6), wherein 0.02≤x≤0.04,0.01≤y≤0.03；Or institute
The chemical general formula for stating fluorescent material is：Ca0.75-xSr0.2Mg1.05-y(Si2O6): XEu, yMn, wherein 0.02≤x≤0.04,0.01≤
y≤0.03。
Chemical formula provided by the present invention for LED white emitting fluorescent powder is preferably Ca0.72Eu0.03Sr0.2Mg1.03Mn0.02
(Si2O6)。
Present invention also offers a kind of preparation method of the white emitting fluorescent powder for LED, comprise the following steps：
（a）According to the chemical general formula Ca of fluorescent material0.75-xEuxSr0.2Mg1.05-yMny(Si2O6) in the mol ratio of each element claim
Oxide or carbonate containing Ca, Eu, Sr, Mg, Mn, Si element are taken, is mixed, grinding is obtained in mixture, the chemical general formula
0.02≤x≤0.04,0.01≤y≤0.03；
（b）The mixture is placed in reducing atmosphere, 1250-1350 DEG C of roasting 4-8h is heated to, obtains sintered body；
（c）The sintered body is cooled to after room temperature and ground, the white emitting fluorescent powder for LED is obtained.
Provided by the present invention for step in the preparation method of LED white emitting fluorescent powder（a）Preferred x in the chemical general formula
=0.03, y=0.02；The fluorescent material prepared under optimum condition is easier to launch the higher white light of purity.
Provided by the present invention for step in the preparation method of LED white emitting fluorescent powder（a）Described milling time is 15-
30min。
Provided by the present invention for step in the preparation method of LED white emitting fluorescent powder（b）The described rate of heat addition is 5-
10℃/min。
Provided by the present invention for step in the preparation method of LED white emitting fluorescent powder（b）Described reducing atmosphere refers to
Carbon dust is embedded or H2、N2The reducing atmosphere of mixed gas formation.
Provided by the present invention for step in the preparation method of LED white emitting fluorescent powder（b）It is heated to 1250-1350
DEG C roasting 6h.
Provided by the present invention for step in the preparation method of LED white emitting fluorescent powder（b）It is heated to 1300 DEG C of roastings
Burn 6h.
Provided by the present invention for step in the preparation method of LED white emitting fluorescent powder（a）Weigh containing Ca, Sr, Mg, Si
, Eu, Mn element oxide or carbonate be preferably CaCO3（A.R.）、SrCO3（A.R.）、MgO（A.R.）、SiO2（A.R.）、
Eu2O3 And MnCO (99.99%)3（A.R.）.
It is well known that in prepared by the research and development of fluorescent material, the fluorescent material of the single pure host luminescent for the rare earth element that undopes
Very few, particularly in the preparation of silicate fluorescent powder matrix, almost without one rare earth element is doped with, this necessarily makes
Obtain prepared fluorescent material matrix cost higher, and then can also increase therewith for preparing white emitting fluorescent powder cost.The present invention is just
It is to overcome the technology barrier, being prepared for a kind of undoped rare earth ion first using the element of special ratios just can emitting bright Huang
The single pure silicate matrix of light, the matrix has very strong wide band absorption, launch wavelength scope 350-800nm in 200-400nm；
In this wave-length coverage, full spectral emissions can be achieved, meet the requirement that excites of near ultraviolet LED chip, and come from matrix hole
Luminescence mechanism, is doped with the Eu of special ratios in the matrix2+And Mn2+It is successfully prepared the white emitting fluorescent powder for LED.This
Invent the white emitting fluorescent powder excitation wavelength range prepared wide, luminous intensity is high, stability is high, can effectively be swashed by specific UV wavelength
Bright white light is sent, and matrix of the present invention is non-rare earth ion doped single pure silicate so that it is final
The production cost of the white emitting fluorescent powder of preparation is greatly lowered compared with prior art.In addition, the white emitting fluorescent powder that the present invention is provided is adopted
With high temperature solid-state method, its preparation technology is simple, it is easy to operational control, and safe, preparation time is short, and production efficiency is high, is suitable to
Industrialization large-scale production and application.
Brief description of the drawings
Fig. 1 is the X ray diffracting spectrum of silicate substrate prepared by embodiment 1（XRD）.
Fig. 2 is the exciting light spectrogram and launching light spectrogram of silicate substrate prepared by embodiment 1.Wherein, excitation wavelength lambdaex
=275nm, emission wavelength lambdaem=585nm.
Fig. 3 is that silicate substrate prepared by embodiment 1 releases temperature spectra characteristic curve from the heat of 20 DEG C to 250 DEG C of room temperature
Figure.
Fig. 4 is the X ray diffracting spectrum of white emitting fluorescent powder prepared by embodiment 2（XRD）.
Fig. 5 is the launching light spectrogram of white emitting fluorescent powder prepared by embodiment 2.
Fig. 6 is white emitting fluorescent powder lighting and chromaticity coordinates under wave band 350-360nm burst of ultraviolel prepared by embodiment 2
Figure.
Embodiment
Example below is used to the present invention is further described, but embodiment does not do any type of limit to the present invention
It is fixed.Unless stated otherwise, the reagent of the invention used, method and apparatus is the art conventional reagent, methods and apparatus.But
The invention is not limited in any way.
Embodiment 1
Calcium carbonate is weighed respectively（CaCO3）0.9759g, strontium carbonate（SrCO3）0.3838g, magnesia（MgO）0.5501g、
Silica（SiO2）1.5621g, is placed in agate mortar after being fully ground 30min and being well mixed；By the powder after grinding
It is placed in small dry pot and the buried roasting in carbon reducing agent atmosphere, 1300 DEG C is warming up to by 8 DEG C/min of the rate of heat addition, in the temperature
The lower sintering 6h of degree, naturally cools to room temperature；Sample is taken out and ground, chemical formula is obtained for Ca0.75Sr0.2Mg1.05(Si2O6) silicon
Hydrochlorate matrix.
Embodiment 2
Calcium carbonate is weighed respectively（CaCO3）0.9368g, strontium carbonate（SrCO3）0.3838g, magnesia（MgO）0.5344g、
Silica（SiO2）1.5621g, manganese carbonate（MnCO3）0.0299g, europiumsesquioxide（Eu2O3）0.0686g, is placed in agate and grinds
After 30min is fully ground in alms bowl and is well mixed；Powder after grinding is placed in small dry pot and buried in carbon reducing agent atmosphere
Middle roasting, is warming up to 1300 DEG C by 5 DEG C/min of the rate of heat addition, 6h is sintered at such a temperature, naturally cool to room temperature；By sample
Grinding is taken out, chemical formula is obtained for Ca0.72 Eu 0.03Sr0.2Mg1.03Mn0.02(Si2O6) white emitting fluorescent powder.
Embodiment 3
Calcium carbonate is weighed respectively（CaCO3）0.9499g, strontium carbonate（SrCO3）0.3838g, magnesia（MgO）0.5344g、
Silica（SiO2）1.5621g, manganese carbonate（MnCO3）0.0448g, europiumsesquioxide（Eu2O3）0.0457g, is placed in agate and grinds
After 20min is fully ground in alms bowl and is well mixed；Powder after grinding is placed in small dry pot and buried in carbon reducing agent atmosphere
Middle roasting, is warming up to 1300 DEG C by 10 DEG C/min of the rate of heat addition, 6h is sintered at such a temperature, naturally cool to room temperature；By sample
Product take out grinding, obtain chemical formula for Ca0.73 Eu 0.02Sr0.2Mg1.02Mn0.03(Si2O6) white emitting fluorescent powder.
Embodiment 4
Calcium carbonate is weighed respectively（CaCO3）0.9238g, strontium carbonate（SrCO3）0.3838g, magnesia（MgO）0.5344g、
Silica（SiO2）1.5621g, manganese carbonate（MnCO3）0.0448g, europiumsesquioxide（Eu2O3）0.0915g, is placed in agate and grinds
After 15min is fully ground in alms bowl and is well mixed；Powder after grinding is placed in small dry pot and buried in carbon reducing agent atmosphere
Middle roasting, is warming up to 1250 DEG C by 8 DEG C/min of the rate of heat addition, 8h is sintered at such a temperature, naturally cool to room temperature；By sample
Grinding is taken out, chemical formula is obtained for Ca0.71 Eu 0.04Sr0.2Mg1.02Mn0.03(Si2O6) white emitting fluorescent powder.
Embodiment 5
Calcium carbonate is weighed respectively（CaCO3）0.9499g, strontium carbonate（SrCO3）0.3838g, magnesia（MgO）0.5499g、
Silica（SiO2）1.5621g, manganese carbonate（MnCO3）0.0149g, europiumsesquioxide（Eu2O3）0.0457g, is placed in agate and grinds
After 15min is fully ground in alms bowl and is well mixed；Powder after grinding is placed in small dry pot and buried in carbon reducing agent atmosphere
Middle roasting, is warming up to 1250 DEG C by 8 DEG C/min of the rate of heat addition, 6h is sintered at such a temperature, naturally cool to room temperature；By sample
Grinding is taken out, chemical formula is obtained for Ca0.73 Eu 0.02Sr0.2Mg1.04Mn0.01(Si2O6) white emitting fluorescent powder.
Embodiment 6
Calcium carbonate is weighed respectively（CaCO3）0.9368g, strontium carbonate（SrCO3）0.3838g, magnesia（MgO）1.5396g、
Silica（SiO2）1.5621g, manganese carbonate（MnCO3）0.0299g, europiumsesquioxide（Eu2O3）0.0686g, is placed in agate and grinds
After 15min is fully ground in alms bowl and is well mixed；Powder after grinding is placed in small dry pot and buried in carbon reducing agent atmosphere
Middle roasting, is warming up to 1350 DEG C by 8 DEG C/min of the rate of heat addition, 4h is sintered at such a temperature, naturally cool to room temperature；By sample
Grinding is taken out, chemical formula is obtained for Ca0.72 Eu 0.03Sr0.2Mg1.03Mn0.02(Si2O6) white emitting fluorescent powder.
Embodiment 7
Calcium carbonate is weighed respectively（CaCO3）0.9368g, strontium carbonate（SrCO3）0.3838g, magnesia（MgO）1.5396g、
Silica（SiO2）1.5621g, manganese carbonate（MnCO3）0.0299g, europiumsesquioxide（Eu2O3）0.0686g, is placed in agate and grinds
After 15min is fully ground in alms bowl and is well mixed；Powder after grinding is placed in small dry pot, and in H2、N2Mixed gas is formed
Reducing atmosphere in be calcined, be warming up to 1250 DEG C by 8 DEG C/min of the rate of heat addition, 8h sintered at such a temperature, naturally cool to
Room temperature；Sample is taken out and ground, chemical formula is obtained for Ca0.72 Eu 0.03Sr0.2Mg1.03Mn0.02(Si2O6) white emitting fluorescent powder.
The optical property detection of luminescent material prepared by the detection embodiment of embodiment 8.
Detect matrix Ca prepared by embodiment 10.75Sr0.2Mg1.05(Si2O6), obtain the X ray diffracting spectrum of the fluorescent material
As shown in Figure 1；Its excitation and emission spectra is obtained as shown in Fig. 2 excitation wavelength lambda in figureex=275nm, emission wavelength lambdaem=
585nm, can obtain obvious yellow emission, and excitation is very high, in theory, using the matrix as raw material, and some bluenesss of adulterating are characterized
Rare earth element can prepare the white emitting fluorescent powder needed for LED；Temperature spectra performance diagram is released from 20-250 DEG C of heat of room temperature
As shown in figure 3, the figure effectively annotated the matrix luminescence mechanism lie in hole trap light, its trap depth is
0.62ev。
Detected by taking the fluorescent material prepared by embodiment 2 as an example, obtain its X ray diffracting spectrum as shown in figure 4, passing through
Do not change original structure, i.e. rare earth element Eu with explanation doping after the contrast of standard card2+And Mn2+Matrix is circulated completely；Obtain it
Launching light spectrogram is as shown in figure 5, excitation wavelength lambdaex=356nm；Illustrate to be doped with spy in matrix prepared by the embodiment of the present invention 1
The blue Eu of certainty ratio2+With the Mn of regulation colour temperature2+The fluorescent material that can be emitted white light is prepared for, particularly as doping ratio Eu2+For
0.03mol、Mn2+During for 0.02mol, the higher white emitting fluorescent powder of optical purity can be obtained.The white light for obtaining the preparation of embodiment 2 is glimmering
Luminous and chromaticity coordinates of the light powder under wave band 350-360nm burst of ultraviolel is as shown in Figure 6.The present invention is with undoped rare earth ion
Silicate is matrix, has saved rare earth resources and has reduced the cost of product, has been prepared for the white emitting fluorescent powder of excellent performance, has
Boundless application prospect.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by the embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (8)
1. a kind of white emitting fluorescent powder for LED, it is characterised in that the chemical general formula of the fluorescent material is Ca0.75- xEuxSr0.2Mg1.05-yMny(Si2O6), wherein 0.02≤x≤0.04,0.01≤y≤0.03.
2. the white emitting fluorescent powder according to claim 1 for LED, it is characterised in that the chemical formula of the fluorescent material is
Ca0.72Eu0.03Sr0.2Mg1.03Mn0.02(Si2O6)。
3. the preparation method of a kind of white emitting fluorescent powder for LED, it is characterised in that comprise the following steps：
（a）According to the chemical general formula Ca of fluorescent material0.75-xEuxSr0.2Mg1.05-yMny(Si2O6) in the mol ratio of each element weigh and contain
There are the oxide or carbonate of Ca, Eu, Sr, Mg, Mn, Si element, mix, grinding is obtained 0.02 in mixture, the chemical general formula
≤ x≤0.04,0.01≤y≤0.03；
（b）The mixture is placed in reducing atmosphere, 1250-1350 DEG C of roasting 4-8h is heated to, obtains sintered body；
（c）The sintered body is cooled to after room temperature and ground, the white emitting fluorescent powder for LED is obtained.
4. the preparation method of the white emitting fluorescent powder according to claim 3 for LED, it is characterised in that step（a）It is described
X=0.03, y=0.02 in chemical general formula.
5. the preparation method of the white emitting fluorescent powder according to claim 3 for LED, it is characterised in that step（a）It is described
Milling time be 15-30min.
6. the preparation method of the white emitting fluorescent powder according to claim 3 for LED, it is characterised in that step（b）It is described
The rate of heat addition be 5-10 DEG C/min.
7. the preparation method of the white emitting fluorescent powder according to claim 3 for LED, it is characterised in that step（b）It is described
Reducing atmosphere refer to carbon dust embedding or H 2、N2 The reducing atmosphere of mixed gas formation.
8. the preparation method of the white emitting fluorescent powder according to claim 3 for LED, it is characterised in that step（b）Heating
It is warming up to 1250-1350 DEG C of roasting 6h.
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| CN105264043A (en) * | 2013-05-23 | 2016-01-20 | 默克专利股份有限公司 | Phosphors |
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Non-Patent Citations (2)
| Title |
|---|
| P. Benna et al..Structural Modifications in Clinopyroxene Solid Solutions: The Ca Mg and Ca, Sr Substitutions in the Diopside Structure.《Mineralogy and Petrology》.1986,第36卷 * |
| 李盼来等.白光LED 用单基质白色发光荧光粉的研究进展.《科学通报》.2011,第56卷 * |
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